Why you need a big air filter - 101
Keep seeing people put horribly small air filters on their turbos
time and time again has made me want to finally explain why this is bad.
When the turbo has to work to pull air in it is actually creating a vacuum
at the inlet in regards to normal ambient air pressure.
What this means is the turbo is starting at a negative boost pressure
instead of at 0. So to make 10psi of boost pressure the turbo is actually
having to produce 12psi thru the compressor to compensate for the 2psi vac
it had to start out with.
This raises your actual P.R. (pressure ratio) the compressor is working at
which means the turbo is dumping more heat into the intake charge than
it needs to, which kills intercooler efficiency, intake charge density and horsepower.
It also puts a load on the center shaft of the turbo that it was not designed
for and causes premature bearing wear.
Just by putting a proper sized air filter on you can ..........
reduce intake temps
reduce chances of detonation
increase turbo life span.
Democracy is two wolves and a sheep sitting down and voting on whats for lunch.
Last edited by r.barn; 07-24-2010 at 12:04 PM.